Categories: Honda GY6 50cc KYMCO KAWASAKI scooter ATV, Honda GY6 125 150, Honda GY6 50cc 139QMB KYMCO SYM ...etc
Big Bore kit 88cc (90cc) 52mm bore size for GY6 50cc Cylinder upgrade kit
include : 50mm cylinder , Piston Kit , Gaskets
will fit to following GY6 & 139QMB 50cc base engine
Kawasaki : 50cc 4-stroke ATV
Kymco: Freeway 50,Filly 50cc,Agility 50cc
Taishan:Sport 50cc,Commuter 50cc
Baotian:50QT-9,50QT-11
Sinski:XSJ50QT-B,XSJ50QT-6
Dotera:50QT-11
Jalon:JL50QT-18
and other Chinese Cloned GY6 base 50cc engine
**** for engine code with "QJ"139QMB engine code include following Brand: VENTO, Roketa, Baja Motorsports, Kazuma....etc you have to modify engine case to 56mm for this big bore kit.**** You can check your engine serial number the number stamped on engine case near engine mount